usi USI-7385 User manual

WHAT YOU SHOULD KNOW ABOUT CO
Carbon monoxide (CO) is an insidious poison. It is a colorless, odorless, tasteless gas. It is
a cumulative poison. Even low levels of CO have been shown to cause brain and other vital
organ damage in unborn infants with no effect on the mother.
The following s mptoms are related to CARBON MONOXIDE POISONING and should be
discussed with ALL members of the household:
MILD EXPOSURE
Slight headache, nausea, vomiting, fatigue (often described as "flu-like" s mptoms).
MEDIUM EXPOSURE
Severe throbbing headache, drowsiness, confusion, fast heart rate.
EXTREME EXPOSURE
Unconsciousness, convulsions, cardiorespirator failure, death.
Man cases of reported CARBON MONOXIDE POISONING indicate that victims are aware
the are not well, but the become so disoriented that the are unable to save themselves
b either exiting the building or calling for assistance. Young children and household pets
ma be the first affected.
Your CO alarm is designed to detect the toxic CO fumes that result from incomplete
combustion, such as those emitted from appliances, furnaces, fireplaces and auto exhaust.
A CO alarm is NOT A SUBSTITUTE for other combustible gas, fire or smoke alarms. This
carbon monoxide alarm is designed to detect carbon monoxide gas from ANY source of
combustion.
This alarm will onl indicate the presence of carbon monoxide gas surrounding its sensor.
Carbon monoxide gas ma be present in other areas.
This product is intended for use in ordinar indoor locations of famil living units. It is not
designed to measure compliance with Occupational Safet and Health Administration
(OSHA) commercial or industrial standards. Individuals with medical problems ma consider
using warning devices which provide audible and visual warnings for carbon monoxide
concentrations under 30 PPM.
WHAT YOU SHOULD DO IF THE ALARM SOUNDS
Never disconnect a CO alarm to silence an alarm. The alarm will automaticall sense when
the level of CO in the air falls below the danger level. You should sta outside the residence
in fresh air until the alarm is silenced. When the alarm sounds, do not stand too close to the
alarm. The sound produced b the alarm is loud because it is designed to awaken a person
in an emergenc . Prolonged exposure to the alarm at a close distance ma be harmful to
our hearing.
Two self-adhesive labels have been provided with instructions indicating what to do if the
alarm sounds. Add the phone numbers of our emergenc services provider and a qualified
technician to each label. Place one of the labels in a visible area next to the alarm and
place the other label near a source of fresh air which will be used as a gathering place if the
alarm sounds.
IMPORTANT CONSIDERATIONS
YOUR CARBON MONOXIDE ALARM HAS BEEN DESIGNED AND IS
WARRANTED TO OPERATE FOR FIVE YEARS.
NOTE: MANUFACTURER RECOMMENDS REPLACEMENT OF ALARM FIVE
YEARS AFTER DATE OF PURCHASE.
MODEL USI-7385/USI-73 0
CARBON MONOXIDE ALARM
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OWNER'S MANUAL
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FIGURE 1
FIGURE 2
Activation of this device indicates the presence of carbon monoxide
(CO) which can kill ou. If alarm sounds:
1. Operate test/reset button;
2. Call our emergenc services, fire department or 911;
3. Immediatel move to fresh air - outdoors or b an open door/window. Do a head count
to check that all persons are accounted for. Do not reenter the premises nor move
awa from the open door/window until the emergenc services responders have arrived,
the premises have been aired out, and our alarm remains in its normal condition.
4. After following steps 1-3, if our alarm reactivates within a 24 hour period, repeat steps
1-3 and call a qualified appliance technician; to
investigate for sources of CO from fuel burning equipment and appliances and inspect
for proper operation of this equipment. If problems are identified during this inspection,
have the equipment serviced immediatel . Note an combustion equipment not
inspected b the technician and consult the manufacturers' instructions or contact the
manufacturer(s) directl for more information about CO safet and this equipment.
Make sure that motor vehicles are not, and have not been, operating in an attached
garage or adjacent to the residence.
INSTALLING THE ALARM FOR RESIDENTIAL USE
LOCATION
One of the most important considerations in an CO alarm s stem is the location of the
alarms. Statistics of the National Fire Protection Association (NFPA) show that most of the
fatal CO occurrences happen at night while people are sleeping.
Earl warning of CO is best achieved b the installation of CO alarms on all floors and
areas of the household including attached garages. Placement of a alarm in a garage ma
cause an alarm due to CO from automotive exhaust.
RECOMMENDATIONS
 Put a CO alarm inside each bedroom where the occupant closes the door while sleeping.
Particulate smoke can be blocked b a closed door, but CO fumes are likel to get
through.
 A CO alarm should be installed in an famil living unit containing a fuel-burning appliance
or fireplace or having an attached garage.
 A CO alarm should be centrall located outside of each separate sleeping area in the
immediate vicinit of the bedrooms. Where bedrooms are separated and audibilit of the
alarm to occupants within the bedroom area could be seriousl impaired, more than one
unit could be needed.
(Phone No. )
(Phone No. )

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MOUNTING LOCATION
This CO alarm can be mounted on the wall or ceiling.
WALL LOCATION: Locate the top of the alarm not more than 6 feet from the floor.
CEILING LOCATION: Alarm should be mounted as close as possible to the center of
a hallwa or room. If this is not possible, the edge of the alarm should be at least 4
inches from an wall.
LOCATIONS TO AVOID
Nuisance alarms are caused b placing alarms where the will not operate properl .
To avoid nuisance alarms, do not place alarms:
 Within 1 foot (.3m) from fluorescent lights. Electronic noise ma cause false alarms.
 Within 5 feet (1.5m) of an cooking appliance.
 Near an open window or door, because the fresh air entering the opening ma
dela CO from reaching the alarm.
 In damp or ver humid areas or next to bathrooms with showers. Install alarms at
least 10 feet (3m) awa from bathrooms.
 In ver cold or ver hot environments or in unheated buildings or outdoor rooms
where the temperature can go below or above the operating range of the alarm.
Temperature limits for proper operation are 40o to 100oF (4.4o to 37.8oC).
 Good ventilation is recommended when household cleaning supplies or similar
contaminants are used.
 Excessive spillage or reverse venting of fuel burning appliances caused b outdoor
ambient conditions, such as:
 Wind direction and/or velocit , including high gusts of wind. Heav air in the vent
pipes (cold/humid air with extended periods between c cles).
 Negative pressure differential resulting from the use of exhaust fans.
 Simultaneous operation of several fuel burning appliances competing for limited
internal air.
 Vent pipe connections vibrating loose from clothes dr ers, furnaces, or water
heaters.
 Obstructions in or unconventional vent pipe designs which can amplif the above
situations.
 Extended operation of unvented fuel burning devices (range, oven, fireplace, etc.)
 Temperature inversions which can trap exhaust gasses near the ground.
 Car idling in an open or closed attached garage, or near a home.
What Levels o CO Cause an Alarm?
Underwriters Laboratories Inc. UL2034 defines three specific alarm points b which
all residential CO alarms must alarm. The are measured in parts per million (ppm) of
CO over time (in minutes).
UL2034 Required Alarm Points:
_If the alarm is exposed to 400 ppm of CO, IT MUST ALARM BETWEEN 4 and 15
MINUTES.
_If the alarm is exposed to 150 ppm of CO, IT MUST ALARM BETWEEN 10 and 50
MINUTES.
_If the alarm is exposed to 70 ppm of CO, IT MUST ALARM BETWEEN 60 and 240
MINUTES.

DEVELOPING YOUR OWN CO SAFETY PLAN
This CO alarm can quickl alert ou to the presence of CO - it cannot prevent toxic CO
emissions. Please note that there are hazards against which CO detection ma not be
effective, such as gas leaks or explosions. The ultimate responsibilit for protection against
toxic CO fumes rests solel on ou.
Installing CO alarms is just the first step in protecting our famil from toxic CO poisoning.
We also suggest that ou create an effective, comprehensive safet program as outlined
below.
1. Install CO alarms properl following the instructions in this manual. Keep our CO alarms
clean - do not wash. Wipe with a clean towel. Test our alarms weekl and repair or
replace them when the no longer function. As with an electronic product, alarms have
a limited life and alarms that do not work cannot protect ou.
2. Develop a famil escape plan and practice it with our entire famil , especiall small
children.
 Draw a floor plan of our home and find two wa s to exit from each room. There
should be one wa to get out of each bedroom without opening the door.
 Teach children what the CO alarm signal means and how the must be prepared to
leave the residence b themselves if necessar .
 Decide on a meeting place a safe distance from our house and make sure all children
understand where the should go and wait if there is a dangerous CO condition.
 Conduct CO safet drills at least ever 6 months to make sure that ever one, even
small children, knows what to do in order to escape safel .
 Know where to go to call the Fire Department from outside our residence.
This unit is designed to detect carbon monoxide (CO) entering its sensing chamber. It does
not sense combustible gas (such as natural gas, propane or butane), heat, smoke or flames.
NOTE: This CO alarm is designed for use within a single residential living unit onl . In a
multi-famil building, the alarm ma not provide earl warning for residents if it is placed
outside of the residential units, such as on outside porches, in corridors, lobbies, basements,
or in other apartments. In multi-famil buildings, each residential unit should have detectors
installed as previousl indicated.
When properl located, installed, and maintained, this CO alarm is designed to provide
earl warning of developing poisonous CO conditions at a reasonable cost. This alarm
monitors the air, and when it senses CO, it activates its built-in alarm. It can provide precious
time for ou and our famil to escape from our residence before CO can seriousl injure
or kill. However, such an earl warning is possible onl if the alarm is located, installed, and
maintained as specified in the Owners Manual.
IMPORTANT: WHAT YOUR CO ALARM CAN AND CANNOT DO
If the bedroom doors are usuall closed at night, alarms should be placed in each bedroom
as well as in the common hallwa between them.
CO alarms also ma not sense CO on a different level of a residence or building. For
example, a second floor alarm ma not sense a CO leak on the first floor or in the basement.
Therefore, alarms should be placed on ever level of a residence or building.
If the alarm is located outside of a bedroom, it ma not wake up a sound sleeper, especiall
if the bedroom door is closed or onl partl open. If the alarm is located on a different level
of the residence than the bedrooms, it is even less likel to wake up people sleeping in the
bedroom.
Installing CO alarms ma qualif ou for lower homeowner's insurance rates, but CO alarms
are not a substitute for insurance. Homeowners and renters should continue to insure their
lives and propert .
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INSTALLATION AND OPERATION
INSTALLATION INSTRUCTIONS: CAUTION!! READ CAREFULLY.
CAUTION: THIS UNIT IS SEALED. THE COVER IS NOT REMOVABLE!
 A mounting plate is provided on the back of the alarm.
 Remove the mounting plate from the back of the alarm b holding the mounting plate
and twisting the alarm in the direction indicated b the "TURN TO REMOVE" arrow on
the side of the alarm base.
Test alarm immediately following installation and weekl for proper operation b
pushing the test button. The alarm will then test itself for proper operation and the red
LED indicator will flash on two 4-pulse patterns and the alarm will simultaneousl sound
two 4-pulse patterns. The alarm then resumes normal operation.
Installation o this unit must con orm to the electrical codes in your area; Article 760
o the National Electrical Code, NFPA 720/CO Alarms, NFPA 101; SBC (SBCCI); UBC
(ICBO); NBC (BOCA): OTFDC (CABO), and any other local or building codes that may
apply. Wiring and installation must be per ormed by a licensed electrician. Failure to
ollow these guidelines may result in injury or property damage.
This unit must be powered by a 24-hour, 120V AC 60Hz circuit. Be sure the circuit
cannot be turned o by a switch, dimmer or ground ault circuit interrupter. Failure to
connect this unit to a 24-hour circuit may prevent it rom providing constant protection.
ELECTRICAL SHOCK HAZARD
Turn o power to the area where you will install this unit at the circuit breaker or use
box be ore beginning installation. Failure to turn o the power be ore installation
may result in serious electrical shock, injury or death.
TAMPER LOCKING PIN: To make our alarm somewhat tamper resistant, a locking pin
has been provided. Using this pin will deter children and others from removing the alarm
from the mounting plate. To use the pin, insert it into the hole in the side of the alarm after
it has been installed on the mounting plate. Using long nose pliers, pull the pin out of the
hole. It is now possible to remove the alarm from the mounting plate.
1. Turn the alarm counterclockwise in the direction indicated b the "TURN TO REMOVE"
arrow on the side of the alarm base to remove it from the mounting plate. NOTE: The
alarm is sealed and the cover is not removable.
2. Wiring Instructions:
a. The appropriate power suppl is 120 Volt single phase power supplied from a non-
switchable circuit NOT protected b a ground fault circuit interrupter.
b. Turn off main power to the circuit before wiring the alarm.
c. There are three pigtail leads (black, white and ellow) coming from the AC QUICK
CONNECTOR. The proper wire connection is as follows:
WIRES FROM QUICK CONNECTOR CONNECT TO
BLACK "HOT" side of AC line
WHITE "NEUTRAL" side of AC line
YELLOW Interconnect wires of other units
For units that are used as single alarms, do not connect the yellow wire to anything.
Insulate this wire (tape it) in place to make certain the yellow wire cannot contact any
metal parts.
Interconnected units can provide earlier warning than stand-alone units, especially i
dangerous CO (carbon monoxide) levels start in a remote area o the dwelling. This
unit will interconnect with ALL USI ELECTRIC AC carbon monoxide alarms, smoke
alarms, heat alarms and relay modules. A maximum o 18 units can be interconnected,
but there can be no more than 12 interconnected smoke alarms.
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Interconnected CO alarms will only respond i a CO alarm / event initiates the alarm.
All other alarms remain silent.
Interconnected smoke alarms, heat alarms and relay modules will only respond i a
smoke alarm / event or heat alarm / event initiates the alarm. All CO alarms remain
silent.
Note that units without battery backup will not respond during an AC power ailure.
The yellow wire is used only or multiple station operation with USI ELECTRIC Model alarms
only. Connecting this yellow wire to any other circuits may result in damage. When alarms
are interconnected, all units must be powered rom a single AC branch circuit. I local codes
do not permit be sure the neutral wire is common to both phases. The maximum wire run
distance between the irst and last alarm/device in an interconnected system is 1,000 eet.
NOTE: Use standard household wire (18 gauge or larger, rated at least 300V, as required by
local codes) available at all electrical supply/hardware stores.
3. Attach the mounting plate to the electrical junction box.
4. To activate the 9 Volt batter and alarm, hold the QUICK DRAWTM pull-out batter drawer closed,
pull and remove the PULL-TAB. Discard PULL-TAB.
5. Plug the AC QUICK CONNECTOR onto the alarm base. Push and turn the alarm clockwise
onto the mounting plate.
6. See "TAMPER LOCKING PIN."
7. Turn on AC power and press the TEST/RESET button and check the LED's for proper operation
(see TESTING YOUR ALARM). After test sequence, the green LED lights to indicate AC power
and blinks off approximatel ever 20 seconds to indicate proper operation.
OPERATION, TESTING & MAINTENANCE
OPERATION: The alarm is operating once the power is connected and turned on (for Model USI-
7390, the batter must also be installed). When CO gas is sensed at a high level or at a low level for
a length period of time, the unit sounds a loud alarm which continues until the air is cleared, or the
alarm is reset.
TESTING YOUR ALARM: Test alarm monthl for proper operation b pushing the test button.
Release the button. The green LED will go off and the ellow LED will come on. The alarm will then
test itself for proper operation and the red LED will flash on two 4-pulse patterns and the alarm will
simultaneousl sound two 4-pulse patterns. The alarm then resumes normal operation.
STANDBY CONDITION: The green LED is on and blinks off approximatel ever 20 seconds
whenever AC power is turned on.
LOCAL ALARM CONDITION: The red LED flashes on and the unit emits a loud, pulsating alarm
(4 short beeps, pause/4 short beeps, pause, until reset).
If the local alarm is self-cleared, i.e. the carbon monoxide level returns to normal, the green LED
flashes off and on until manuall reset.
REMOTE ALARM CONDITION: The red LED is off and the unit emits a loud, pulsating alarm
(4 short beeps, pause/4 short beeps, pause, until reset).
INPUT:
120 VAC 60 HZ
100mA

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NORMAL OPERATION
In normal operation, the alarm will blink the green LED off once approximatel ever
20 seconds.
SERVICE/TROUBLE CONDITION
Periodicall , the alarm's measurement circuit is tested. If an error is detected, the
alarm will sound a double "beep" and the ellow LED will flash on twice approximatel
ever 40 seconds. This is an indication of circuit malfunction and that the alarm required
immediate servicing.
When AC power is lost, the green LED is off and flashes on approximatel ever 60
seconds.
MAINTENANCE
BATTERY REPLACEMENT (Model USI-73 0 only)
The CO alarm is powered (backup) b a 9V batter . A fresh batter should last for one
ear under normal operating conditions. This alarm has a low batter monitor circuit
which will cause the alarm to sound a short "beep" approximatel ever 40 seconds,
for a minimum of 7 da s, when the batter gets low. Replace the batter when this
condition occurs, b using the QUICK DRAWTM pull-out batter drawer for eas
replacement.
Slide the QUICK DRAWTM pull-out batter drawer out. While observing polarit , push
the replacement batter into the batter drawer until it is held securel in place. Carefull
close and latch the QUICK DRAWTM pull-out batter drawer.
USE ONLY THE FOLLOWING VOLT BATTERIES FOR CO ALARM
REPLACEMENT
Alkaline t pe: EVEREADY 522; DURACELL MN1604
Lithium t pe: ULTRALIFE U9VL-J
NOTE: REGULAR TESTING IS RECOMMENDED.
USE ONLY THE BATTERIES SPECIFIED. USE OF DIFFERENT BATTERIES MAY
HAVE A DETRIMENTAL EFFECT ON THE CO ALARM. THE CONSTANT
EXPOSURES TO HIGH OR LOW TEMPERATURES OR HIGH HUMIDITY MAY
REDUCE BATTERY LIFE.
CLEANING YOUR ALARM
To clean our alarm, remove it from the mounting plate as outlined in the beginning of
this section.
You can clean the interior of our alarm b using our vacuum cleaner hose and
vacuuming through the openings around the perimeter of the alarm.
The outside can be wiped with a damp cloth. Do not use an household cleaning
agents, ammonia based cleaners, paints, varnishes or an other chemical on or near
our alarm. AFTER CLEANING, REINSTALL YOUR ALARM. TEST YOUR ALARM
BY USING THE TEST BUTTON.
Disconnect AC power be ore changing battery. Shock hazard exists i AC power
is miswired.

USI FIVE YEAR LIMITED WARRANTY
USI ELECTRIC, INC. ("USI") warrants your USI product to be free from
defects in material and workmanship for a period of five (5) years from the
date of purchase. This warrant applies onl to the original consumer purchaser
and onl to products used in normal residential use and service. If this product is
found to be defective, USI's onl obligation, and our exclusive remed , is the
repair or replacement of the product, at USI's discretion, provided that the product
has not been damaged through misuse, abuse, accident, modifications, alteration,
neglect or mishandling. This Warrant shall not appl to an product which is
found to have been improperl installed, set-up, or used in an wa not in
accordance with the instructions supplied with the product. This warrant shall
not appl to an batteries used in the product or to an damage which ma be
caused b such batteries. For repair or replacement, send the defective product
to USI ELECTRIC, INC. at 7-A Gw nns Mill Court, Owings Mills, Mar land 21117,
postage prepaid with a pa ment of $8.00 to cover the costs of return postage and
handling. You must include a proof of purchase (receipt) along with the returned
product.
USI DOES NOT WARRANT AND SPECIFICALLY DISCLAIMS ANY
WARRANTY, WHETHER EXPRESS OR IMPLIED, OF FITNESS FOR A
PARTICULAR PURPOSE, OTHER THAN THE WARRANTY CONTAINED
HEREIN. NO IMPLIED WARRANTY ON THIS PRODUCT, CREATED BY STATE
LAW, SHALL EXTEND BEYOND THE TERM OF THIS WARRANTY UNLESS
SUCH LAW OTHERWISE PROVIDES. USI ELECTRIC SPECIFICALLY
DISCLAIMS ANY LIABILITY AND SHALL NOT BE LIABLE FOR ANY
CONSEQUENTIAL OR INCIDENTAL LOSS OR DAMAGE, INCLUDING, BUT
NOT LIMITED TO, DAMAGES TO ANY EQUIPMENT WITH WHICH THIS
PRODUCT IS USED.
Some states do not allow the exclusion or limitation of incidental or consequential
damages so the above limitations or exclusions ma not appl to ou.
No agent, representative, dealer, or emplo ee of the compan has the authorit
to increase or alter the obligations or terms of this Warrant .
This Warrant gives ou specific legal rights and ou ma also have other rights
which var from state to state.
This Warrant is onl valid for merchandise purchased from outlets in the United
States and Canada.
288-3289-00C ©2004, USI ELECTRIC, INC. Printed in China
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